Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: 10.00≤f2/f3≤20.00 and 1.00≤d2/d4≤3.00, where f2 denotes a focal length of the second lens; f3 denotes a focal length of the third lens; d2 denotes an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens; and d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third lens.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, inparticular, to a camera optical lens suitable for handheld devices, suchas smart phones and digital cameras, and imaging devices, such asmonitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes six lenses. Specifically, the camera optical lens 10 includes,from an object side to an image side: an aperture S1, a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and asixth lens L6. An optical element such as an optical filter GF can bearranged between the sixth lens L6 and an image surface Si.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5, and the sixth lens L6 are all made ofplastic material.

Here, the first lens L1 has a negative refractive power, the second lenshas a positive refractive power, and the third lens has a negativerefractive power.

A focal length of the second lens L2 is defined as f2, a focal length ofthe third lens L3 is defined as f3, and the camera optical lens 10should satisfy a condition of 10.00≤f2/f3≤20.00, which specifies a ratioof the focal length f2 of the second lens L2 and the focal length f3 ofthe third lens L3. This can effectively reduce a sensitivity of thecamera optical lens and further enhance an imaging quality. Preferably,the camera optical lens 10 further satisfies a condition of10.15≤f2/f3≤19.98.

An on-axis distance from an image-side surface of the first lens L1 toan object-side surface of the second lens L2 is defined as d2, anon-axis distance from an image-side surface of the second lens L2 to anobject-side surface of the third lens L3 is defined as d4, and thecamera optical lens 10 further satisfies a condition of 1.00≤d2/d4≤3.00,which specifies a ratio of the on-axis distance from the first lens L1to the second lens L2 and the on-axis distance from the second lens L2to the third lens L3. Within this range, a development towardswide-angle lenses would be facilitated. Preferably, the camera opticallens 10 further satisfies a condition of 1.01≤d2/d4≤2.97.

A total optical length from an object-side surface of the first lens L1to the image surface Si of the camera optical lens along an optical axisis defined as TTL.

When the focal length f2 of the second lens L2, the focal length f3 ofthe third lens L3, the on-axis distance d2 from the image-side surfaceof the first lens L1 to the object-side surface of the second lens L2and the on-axis distance d4 from the image-side surface of the secondlens L2 to the object-side surface of the third lens L3 all satisfy theabove conditions, the camera optical lens 10 has an advantage of highperformance and satisfies a design requirement of low TTL.

In an embodiment, an object-side surface of the first lens L1 is convexin a paraxial region and the image-side surface of the first lens L 1 isconcave in the paraxial region.

A focal length of the camera optical lens 10 is defined as f, the focallength of the first lens L1 is defined as f1, and the camera opticallens 10 should satisfy a condition of 0.62≤f1/f≤1.97, which specifies aratio of the focal length f1 of the first lens L1 and the focal length fof the camera optical lens 10. In this way, the first lens has anappropriate positive refractive power, thereby facilitating reducing anaberration of the system while facilitating a development towardsultra-thin and wide-angle lenses. Preferably, the camera optical lens 10further satisfies a condition of 1.00≤f1/f≤1.57.

A curvature radius of the object-side surface of the first lens L1 isdefined as R1, a curvature radius of the image-side surface of the firstlens L1 is defined as R2, and the camera optical lens 10 furthersatisfies a condition of −2.66≤(R1+R2)/(R1−R2)≤−0.79. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, the camera optical lens 10 furthersatisfies a condition of −1.66≤(R1+R2)/(R1−R2)≤−0.98.

An on-axis thickness of the first lens L1 is defined as d1, and thecamera optical lens 10 further satisfies a condition of0.04≤d1/TTL≤0.13. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.07≤d1/TTL≤0.10.

In an embodiment, the object-side surface of the second lens L2 isconcave in the paraxial region and the image-side surface of the secondlens L2 is convex in the paraxial region.

The focal length of the camera optical lens 10 is defined as f, thefocal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of −285.71≤f2/f≤−49.72. Bycontrolling a negative refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of −178.57≤f2/f≤−62.15.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −37.37≤(R3+R4)/(R3−R4)≤−6.25, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting a problemof an on-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −23.36≤(R3+R4)/(R3−R4)≤−7.81.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.03≤d3/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d3/TTL≤0.08.

In an embodiment, the object-side surface of the third lens L3 is convexin the paraxial region and an image-side surface of the third lens L3 isconcave in the paraxial region.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −15.40≤f3/f≤−4.77. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −9.63≤f3/f≤−5.97.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of 2.00≤(R5+R6)/(R5−R6)≤6.57. This can effectivelycontrol a shape of the third lens L3, thereby facilitating shaping ofthe third lens and avoiding bad shaping and generation of stress due toan the overly large surface curvature of the third lens L3. Preferably,the camera optical lens 10 further satisfies a condition of3.20≤(R5+R6)/(R5−R6)≤5.26.

An on-axis thickness of the third lens L3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.02≤d5/TTL≤0.08. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d5/TTL≤0.07.

In an embodiment, an object-side surface of the fourth lens L4 isconcave in the paraxial region, an image-side surface of the fourth lensL4 is convex in the paraxial region, and the fourth lens L4 has apositive refractive power.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of 1.01≤f4/f≤3.16. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and the lower sensitivity.Preferably, the camera optical lens 10 further satisfies a condition of1.61≤f4/f≤2.53.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of 1.44≤(R7+R8)/(R7−R8)≤4.71, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problemlike an off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 2.30≤(R7+R8)/(R7−R8)≤3.77.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.04≤d7/TTL≤0.15. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.07≤d7/TTL≤0.12.

In an embodiment, an object-side surface of the fifth lens L5 is concavein the paraxial region, an image-side surface of the fifth lens L5 isconvex in the paraxial region, and the fifth lens L5 has a negativerefractive power.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of −3.94≤f5/f≤−1.22, whichcan effectively make a light angle of the camera lens gentle and reducean tolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of −2.46≤f5/f≤−1.53.

A curvature radius of the object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of −13.03≤(R9+R10)/(R9−R10)≤−3.99, which specifiesa shape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −8.14≤(R9+R10)/(R9−R10)≤−4.99.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.03≤d9/TTL≤0.09. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.04≤d9/TTL≤0.07.

In an embodiment, an object-side surface of the sixth lens L6 is convexin the paraxial region, an image-side surface of the sixth lens L6 isconcave in the paraxial region, and the sixth lens L6 has a positiverefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of 1.09≤f6/f≤3.80. Theappropriate distribution of refractive power makes it possible that thesystem has the better imaging quality and lower sensitivity. Preferably,the camera optical lens 10 further satisfies a condition of1.75≤f6/f≤3.04.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of 21.52≤(R11+R12)/(R11−R12)≤179.45, whichspecifies a shape of the sixth lens L6. Within this range, a developmenttowards ultra-thin and wide-angle lenses would facilitate correcting theproblem of the off-axis aberration. Preferably, the camera optical lens10 further satisfies a condition of 34.43≤(R11+R12)/(R11−R12)≤143.56.

An on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.09≤d11/TTL≤0.28. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.14≤d11/TTL≤0.23.

In an embodiment, a combined focal length of the first lens and of thesecond lens is defined as f12, and the camera optical lens 10 furthersatisfies a condition of 0.63≤f12/f≤1.99. This can eliminate theaberration and distortion of the camera optical lens and reduce a backfocal length of the camera optical lens, thereby maintainingminiaturization of the camera optical lens. Preferably, the cameraoptical lens 10 further satisfies a condition of 1.01≤f12/f≤1.59.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.06 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 4.83 mm.

In an embodiment, an F number of the camera optical lens 10 is less thanor equal to 2.21. The camera optical lens has a large aperture and abetter imaging performance. Preferably, the F number of the cameraoptical lens 10 is less than or equal to 2.17.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length of the camera optical lens 10 in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd vd S1 ∞ d0= −0.120 R1 2.108 d1= 0.384 nd1 1.5445 v1 55.99R2 24.325 d2= 0.113 R3 −25.670 d3= 0.283 nd2 1.5445 v2 55.99 R4 −31.801d4= 0.112 R5 10.467 d5= 0.249 nd3 1.6613 v3 20.37 R6 6.275 d6= 0.317 R7−3.822 d7= 0.385 nd4 1.5352 v4 56.09 R8 −1.944 d8= 0.271 R9 −0.787 d9=0.236 nd5 1.6713 v5 19.24 R10 −1.072 d10= 0.049 R11 1.095 d11= 0.868 nd61.5352 v6 56.09 R12 1.046 d12= 1.022 R13 ∞ d13= 0.210 ndg 1.5168 vg64.17 R14 ∞ d14= 0.100

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of the object-side surface of the sixth lens L6;

R12: curvature radius of the image-side surface of the sixth lens L6;

R13: curvature radius of an object-side surface of the optical filterGF;

R14: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lens;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image-side surface to the image surfaceof the optical filter GF;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  2.2268E+00 −6.2135E−02 −9.9155E−02  2.9263E−01−5.2343E−01 −4.9169E−01  2.1950E+00 −1.6923E+00 R2 −5.5922E+01−6.7400E−02  3.9919E−02 −4.4792E−02 −9.9695E−02 −2.6571E−01  1.2579E+00−1.3602E+00 R3  9.9081E+02 −3.2493E−03  4.1162E−02  6.5509E−02−3.1583E−01 −6.8657E−01  2.5209E+00 −2.4710E+00 R4 −1.0997E+02−6.4722E−02 −7.3768E−02 −5.0896E−02  2.2418E−02 −1.8967E−01  3.0000E−01−2.8330E−01 R5  1.1859E+02 −1.5950E−01 −1.3573E−01 −8.6929E−02 1.6662E−01  1.7239E−01 −4.9742E−02 −1.0406E−01 R6 −1.5977E+00−5.5539E−02 −9.3197E−02 −1.2530E−02  7.4713E−02  3.5564E−02 −5.0846E−02 2.1522E−02 R7 −6.4092E+00 −1.1016E−01  2.7470E−02 −9.2149E−03−4.7411E−02 −2.3578E−02  7.7276E−02 −1.5332E−02 R8  1.4373E+00−1.0848E−01  5.3738E−02  1.6952E−02  4.9251E−03  1.2287E−02  7.9236E−03−1.7828E−03 R9 −5.7654E+00 −1.1559E−02  3.9053E−03  1.1519E−02−1.0850E−03 −3.7009E−03 −1.8479E−03  1.0928E−03 R10 −4.0925E+00 5.0996E−02 −1.3955E−02 −8.3209E−04  5.0822E−04  2.8156E−04  1.5252E−05−6.0156E−05 R11 −8.1848E+00 −6.8953E−02  1.0656E−02  1.1133E−04−4.4858E−05 −5.5942E−06 −2.0421E−06  3.1272E−07 R12 −4.6868E+00−3.7693E−02  7.0893E−03 −9.3967E−04  5.0141E−05 −6.1510E−07 −5.7937E−08 4.5263E−09

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6. The data in the column named“inflexion point position” refer to vertical distances from inflexionpoints arranged on each lens surface to the optic axis of the cameraoptical lens 10. The data in the column named “arrest point position”refer to vertical distances from arrest points arranged on each lenssurface to the optical axis of the camera optical lens 10.

TABLE 3 Number(s) of Inflexion Inflexion Inflexion inflexion point pointpoint points position 1 position 2 position 3 P1R1 1 0.705 P1R2 1 0.235P2R1 0 P2R2 0 P3R1 2 0.225 0.835 P3R2 2 0.385 0.865 P4R1 1 0.955 P4R2 10.905 P5R1 0 P5R2 2 0.785 1.265 P6R1 3 0.535 1.765 2.145 P6R2 1 0.755

TABLE 4 Number(s) of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 1 0.405 P2R1 0 P2R2 0 P3R1 1 0.365 P3R2 2 0.6250.965 P4R1 0 P4R2 0 P5R1 0 P5R2 0 P6R1 1 1.275 P6R2 1 1.895

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm after passingthe camera optical lens 10 according to Embodiment 1, respectively. FIG.4 illustrates a field curvature and a distortion with a wavelength of555.0 nm after passing the camera optical lens 10 according toEmbodiment 1. A field curvature S in FIG. 4 is a field curvature in asagittal direction, and T is a field curvature in a tangentialdirection.

Table 13 in the following shows various values of Embodiments 1, 2, 3and values corresponding to parameters which are specified in the aboveconditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this Embodiment, an entrance pupil diameter of the camera opticallens is 1.546 mm, an image height of 1.0H is 3.284 mm, a FOV (field ofview) in a diagonal direction is 88.92°. Thus, the camera optical lenshas a wide-angle and is ultra-thin. Its on-axis and off-axis aberrationsare fully corrected, thereby achieving excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0= −0.120 R1 2.146 d1= 0.381 nd1 1.5445 v1 55.99R2 26.202 d2= 0.134 R3 −25.834 d3= 0.287 nd2 1.5445 v2 55.99 R4 −29.608d4= 0.064 R5 10.419 d5= 0.220 nd3 1.6613 v3 20.37 R6 6.359 d6= 0.293 R7−4.006 d7= 0.396 nd4 1.5352 v4 56.09 R8 −1.938 d8= 0.264 R9 −0.784 d9=0.241 nd5 1.6713 v5 19.24 R10 −1.094 d10= 0.060 R11 1.010 d11= 0.804 nd61.5352 v6 56.09 R12 0.992 d12= 1.071 R13 ∞ d13= 0.210 ndg 1.5168 vg64.17 R14 ∞ d14= 0.100

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  2.4014E+00 −6.0118E−02 −8.2004E−02  3.1487E−01−5.4410E−01 −5.2244E−01  2.2201E+00 −1.6458E+00 R2  6.3011E+01−5.0591E−02  5.9758E−02 −4.8023E−02 −1.0614E−01 −2.2379E−01  1.3376E+00−1.5473E+00 R3  1.0256E+03  1.5343E−02  3.0352E−02  5.7202E−02−3.0238E−01 −6.4908E−01  2.5168E+00 −2.7189E+00 R4 −9.3543E+01−6.2826E−02 −6.9158E−02 −6.4567E−02  1.0352E−02 −1.9254E−01  3.0218E−01−2.8505E−01 R5  1.1521E+02 −1.5200E−01 −1.2965E−01 −7.4801E−02 1.7854E−01  1.7115E−01 −4.9751E−02 −9.3149E−02 R6  1.7788E+00−5.4813E−02 −9.3005E−02 −3.9759E−03  7.7768E−02  3.5394E−02 −4.6000E−02 2.6278E−02 R7 −4.4913E+00 −1.1625E−01  2.9037E−02  6.9170E−03−4.6258E−02 −2.8124E−02  7.7416E−02 −1.1566E−02 R8  1.5066E+00−1.0771E−01  5.5270E−02  2.3224E−02  7.6645E−03  1.2913E−02  7.0776E−03−2.3475E−03 R9 −5.8040E+00 −1.1168E−02  1.5783E−03  9.7164E−03−8.5334E−04 −4.9124E−03 −1.9964E−03  1.1713E−03 R10 −4.0124E+00 5.1526E−02 −1.3914E−02 −1.2566E−03  3.0259E−04  2.2569E−04  2.8569E−05−2.2168E−05 R11 −7.2114E+00 −6.9139E−02  1.0837E−02  8.3491E−05−4.9531E−05 −5.1273E−06 −2.0676E−06  3.3958E−07 R12 −4.4817E+00−3.9168E−02  7.2404E−03 −9.4019E−04  5.2863E−05 −5.1177E−07 −5.4626E−08 1.2878E−09

Table 7 and table 8 show design data of inflexion points and arrestpoints of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number(s) of Inflexion Inflexion inflexion point point pointsposition 1 position 2 P1R1 1 0.755 P1R2 1 0.285 P2R1 0 P2R2 0 P3R1 20.235 0.795 P3R2 2 0.395 0.815 P4R1 1 0.925 P4R2 1 0.885 P5R1 0 P5R2 20.805 1.215 P6R1 2 0.545 1.775 P6R2 1 0.745

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 1 0.505 P2R1 0 P2R2 0 P3R1 1 0.375 P3R2 2 0.6350.905 P4R1 0 P4R2 0 P5R1 0 P5R2 0 P6R1 1 1.335 P6R2 1 1.905

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 555.0 nm after passing the camera optical lens 20according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.584 mm, an image height of 1.0H is 3.284 mm, a FOV (field of view)in the diagonal direction is 89.65°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0= −0.120 R1 1.941 d1= 0.382 nd1 1.5445 v1 55.99R2 13.645 d2= 0.150 R3 −25.123 d3= 0.288 nd2 1.5445 v2 55.99 R4 −27.964d4= 0.051 R5 9.003 d5= 0.255 nd3 1.6613 v3 20.37 R6 5.657 d6= 0.303 R7−3.775 d7= 0.444 nd4 1.5352 v4 56.09 R8 −1.951 d8= 0.226 R9 −0.766 d9=0.266 nd5 1.6713 v5 19.24 R10 −1.074 d10= 0.017 R11 1.045 d11= 0.841 nd61.5352 v6 56.09 R12 1.028 d12= 1.054 R13 ∞ d13= 0.210 ndg 1.5168 vg64.17 R14 ∞ d14= 0.100

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1  2.3727E+00 −7.3335E−02 −8.6929E−02  1.0722E−01−2.3316E−01 −5.0114E−01  1.5266E+00 −1.2079E+00 R2 −1.1462E+02−6.6521E−02 −1.2487E−02 −1.2322E−01  4.6414E−02 −3.1883E−01  9.0214E−01−8.7611E−01 R3  6.9306E+02  2.0256E−02  5.0433E−03  5.5788E−02−2.4590E−01 −7.7699E−01  2.4214E+00 −2.1348E+00 R4 −9.4289E+01−5.7238E−02 −6.1792E−02 −3.4883E−02  2.9340E−02 −2.0565E−01  2.2770E−01−1.2795E−01 R5 −7.1847E+00 −1.8427E−01 −1.2502E−01 −6.4255E−02 1.7185E−01  2.0602E−01  1.8836E−03 −1.3661E−01 R6 −1.3447E+01−6.2213E−02 −9.3754E−02  6.8543E−04  8.7107E−02  3.2725E−02 −6.1982E−02 4.2090E−02 R7 −1.0385E+01 −1.0615E−01  2.9249E−02 −1.9380E−02−6.8995E−02 −1.3240E−02  8.7337E−02 −1.7028E−02 R8  1.4535E+00−1.0245E−01  5.6518E−02  1.5514E−02 −5.2761E−04  8.8711E−03  7.0134E−03−7.7098E−04 R9 −5.7701E+00 −1.3487E−02  3.3703E−04  1.1647E−02−9.5999E−05 −4.9058E−03 −1.4524E−03  9.2075E−04 R10 −4.0384E+00 5.1759E−02 −1.4561E−02 −1.8252E−03  3.8469E−04  3.7110E−04 −7.5340E−06−4.6971E−05 R11 −7.5758E+00 −6.8837E−02  1.0579E−02  8.2308E−05−4.6638E−05 −4.7931E−06 −1.8897E−06  2.9017E−07 R12 −4.6518E+00−3.8677E−02  7.1671E−03 −9.6674E−04  4.9915E−05 −8.5745E−08 −1.4224E−08−3.5648E−09

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number(s) of Inflexion Inflexion Inflexion inflexion pointpoint point points position 1 position 2 position 2 P1R1 1 0.655 P1R2 10.285 P2R1 0 P2R2 0 P3R1 2 0.215 0.785 P3R2 2 0.385 0.815 P4R1 1 0.955P4R2 1 0.935 P5R1 0 P5R2 2 0.825 1.065 P6R1 3 0.545 1.805 2.125 P6R2 10.745

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 1 0.465 P2R1 0 P2R2 0 P3R1 1 0.365 P3R2 2 0.6350.895 P4R1 0 P4R2 0 P5R1 0 P5R2 0 P6R1 1 1.305 P6R2 1 1.855

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 555.0 nm and 650.0 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 555.0 nm after passing the camera optical lens 30according to Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.529 mm, an image height of 1.0H is 3.284 mm, a FOV (field of view)in the diagonal direction is 89.52°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.323 3.247 3.287 f1 4.199 4.255 4.095 f2 −247.794 −381.280 −469.494f3 −24.058 −25.003 −23.533 f4 6.876 6.554 6.929 f5 −6.549 −5.954 −6.064f6 8.418 7.101 7.237 f12 4.279 4.314 4.143 Fno 2.150 2.050 2.150 f2/f310.30 15.25 19.95 d2/d4 1.01 2.09 2.94

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens having a positive refractive power;a second lens having a negative refractive power; a third lens having anegative refractive power; a fourth lens; a fifth lens; and a sixthlens; wherein the camera optical lens satisfies following conditions:10.00≤f2/f3≤20.00; and1.00≤d2/d4≤3.00; where f2 denotes a focal length of the second lens; f3denotes a focal length of the third lens; d2 denotes an on-axis distancefrom an image-side surface of the first lens to an object-side surfaceof the second lens; and d4 denotes an on-axis distance from animage-side surface of the second lens to an object-side surface of thethird lens.
 2. The camera optical lens according to claim 1 furthersatisfying following conditions:10.15≤f2/f3≤19.98; and1.01≤d2/d4≤2.97.
 3. The camera optical lens according to claim 1,wherein an object-side surface of the first lens is convex in a paraxialregion and the image-side surface of the first lens is concave in theparaxial region; and the camera optical lens further satisfies followingconditions:0.62≤f1/f≤1.97;−2.66≤(R1+R2)/(R1−R2)≤−0.79; and0.04≤d1/TTL≤0.13; where f denotes a focal length of the camera opticallens, f1 denotes a focal length of the first lens, R1 denotes acurvature radius of the object-side surface of the first lens; R2:denotes a curvature radius of the image-side surface of the first lens;d1 denotes an on-axis thickness of the first lens; and TTL denotes atotal optical length from the object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 4.The camera optical lens according to claim 3 further satisfyingfollowing conditions:1.00≤f1/f≤1.57;−1.66≤(R1+R2)/(R1−R2)≤−0.98; and0.07≤d1/TTL≤0.10.
 5. The camera optical lens according to claim 1,wherein the second lens comprises an object-side surface being concavein a paraxial region and the image-side surface being convex in theparaxial region; and the camera optical lens further satisfies followingconditions:−285.71≤f2/f≤−49.72;−37.37≤(R3+R4)/(R3−R4)≤−6.25; and0.03≤d3/TTL≤0.09; where f denotes a focal length of the camera opticallens; R3 denotes a curvature radius of the object-side surface of thesecond lens; R4 denotes a curvature radius of the image-side surface ofthe second lens; d3 denotes an on-axis thickness of the second lens; andTTL denotes a total optical length from an object-side surface of thefirst lens to an image surface of the camera optical lens along anoptical axis.
 6. The camera optical lens according to claim 5 furthersatisfying following conditions:−178.57≤f2/f≤−62.15;−23.36≤(R3+R4)/(R3−R4)≤−7.81; and0.05≤d3/TTL≤0.08.
 7. The camera optical lens according to claim 1,wherein the third lens comprises an object-side surface being convex ina paraxial region and an image-side surface being concave in theparaxial region, and the camera optical lens further satisfies followingconditions:−15.40≤f3/f≤−4.77;2.00≤(R5+R6)/(R5−R6)≤6.57; and0.02≤d5/TTL≤0.08; where f denotes a focal length of the camera opticallens; R5 denotes a curvature radius of the object-side surface of thethird lens; R6 denotes a curvature radius of the image-side surface ofthe third lens; d5 denotes an on-axis thickness of the third lens; andTTL denotes a total optical length from an object-side surface of thefirst lens to an image surface of the camera optical lens along anoptical axis.
 8. The camera optical lens according to claim 7 furthersatisfying following conditions:−9.63≤f3/f≤−5.97;3.20≤(R5+R6)/(R5−R6)≤5.26; and0.04≤d5/TTL≤0.07.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a positive refractive power, and comprisesan object-side surface being concave in a paraxial region and animage-side surface being convex in the paraxial region, and the cameraoptical lens further satisfies following conditions:1.01≤f4/f≤3.16;1.44≤(R7+R8)/(R7−R8)≤4.71; and0.04≤d7/TTL≤0.15; where f denotes a focal length of the camera opticallens; f4 denotes a focal length of the fourth lens; R7 denotes acurvature radius of the object-side surface of the fourth lens; R8denotes a curvature radius of the image-side surface of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from an object-side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 10. Thecamera optical lens according to claim 9 further satisfying followingconditions:1.61≤f4/f≤2.53;2.30≤(R7+R8)/(R7−R8)≤3.77; and0.07≤d7/TTL≤0.12.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a negative refractive power, and comprises anobject-side surface being concave in a paraxial region and an image-sidesurface being convex in the paraxial region, and the camera optical lensfurther satisfies following conditions:−3.94≤f5/f≤−1.22;−13.03≤(R9+R10)/(R9−R10)≤−3.99; and0.03≤d9/TTL≤0.09; where f denotes a focal length of the camera opticallens; f5 denotes a focal length of the fifth lens; R9 denotes acurvature radius of the object-side surface of the fifth lens; R10denotes a curvature radius of the image-side surface of the fifth lens;d9 denotes an on-axis thickness of the fifth lens; and TTL denotes atotal optical length from an object-side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 12. Thecamera optical lens according to claim 11 further satisfying followingconditions:−2.46≤f5/f≤−1.53;−8.14≤(R9+R10)/(R9−R10)≤−4.99; and0.04≤d9/TTL≤0.07.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a positive refractive power, and comprises anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region, and the camera opticallens further satisfies following conditions:1.09≤f6/f≤3.80;21.52≤(R11+R12)/(R11−R12)≤179.45; and0.09≤d11/TTL≤0.28; where f denotes a focal length of the camera opticallens; f6 denotes a focal length of the sixth lens; R11 denotes acurvature radius of the object-side surface of the sixth lens; R12denotes a curvature radius of the image-side surface of the sixth lens;d11 denotes an on-axis thickness of the sixth lens; and TTL denotes atotal optical length from an object-side surface of the first lens to animage surface of the camera optical lens along an optical axis.
 14. Thecamera optical lens according to claim 13 further satisfying followingconditions:1.75≤f6/f≤3.04;34.43≤(R11+R12)/(R11−R12)≤143.56; and0.14≤d11/TTL≤0.23.
 15. The camera optical lens according to claim 1further satisfying following condition:0.63≤f12/f≤1.99; where f12 denotes a combined focal length of the firstlens and the second lens.
 16. The camera optical lens according to claim15 further satisfying following condition:1.01≤f12/f≤1.59.
 17. The camera optical lens according to claim 1, wherea total optical length TTL from an object-side surface of the first lensto an image surface of the camera optical lens along an optical axis isless than or equal to 5.06 mm.
 18. The camera optical lens according toclaim 17, wherein the total optical length TTL of the camera opticallens is less than or equal to 4.83 mm.
 19. The camera optical lensaccording to claim 1, wherein an F number of the camera optical lens isless than or equal to 2.21.
 20. The camera optical lens according toclaim 19, wherein the F number of the camera optical lens is less thanor equal to 2.17.